Ensure you have installed the specific driver for your relay's version, which can be found on the relay’s physical HMI.
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Visit the Siemens SIPROTEC DIGSI 4 page for links to downloads and updates.
DIGSI 4 is a commercial product, and proper licensing is mandatory. However, it does provide a way to evaluate the software:
If you open an existing project and see an error regarding missing device types, you must download and import the correct Device Driver (VDX) files. These files contain specific firmware parameters for your relay models and are updated separately from the main DIGSI software. siemens digsi 4.91 download
Minimum 1 GHz processor, 1 GB RAM (2 GB recommended), and at least 4 GB of free disk space.
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⚠️ Many users attempting to install DIGSI 4.91 on modern Windows 10 or Windows 11 systems might encounter compatibility issues. In many cases, a more recent version of DIGSI 4 (such as 4.93 or higher ) will likely be required, and you should prioritize searching for the latest version of DIGSI 4 available.
Unlike some competitor tools, DIGSI is not free software. It requires a license key (USB dongle or SL card). While you can download and install the software without a license, it will likely run in "Demo Mode," restricting your ability to save changes or upload configurations to the relay. Ensure you have installed the specific driver for
Once installed, you can connect to physical protection hardware using three primary methods:
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Choose the components you wish to install. It is recommended to install the core , the CFC Editor , and SIGRA for comprehensive fault analysis. Step 3: Device Driver Installation
DIGSI 4.91 is the most modern version of the V4 lineage. It runs natively on Windows 10 (64-bit), which is essential as Windows 7 and XP are retired. It is worth noting that you can install DIGSI 4 and DIGSI 5/6 on the same machine, but they operate as distinct environments. However, it does provide a way to evaluate
DIGSI 4.91 provides a robust, user-friendly interface that speeds up engineering tasks in substation automation. Key capabilities include:
Configure substation communication networks, manage GOOSE messaging, and export/import SCL (Substation Configuration Language) files.
Before installing DIGSI 4.91, ensure your PC meets the following requirements:
DIGSI 4.91 requires a valid license key to unlock full operational functionality. Siemens utilizes a licensing model tailored to project requirements:
: Minimum requirements typically include at least 4GB of RAM (8-16GB recommended) and 5GB of hard drive space for archiving. Key Features Assignment Matrix
The included IEC 61850 System Configurator allows for the effortless design of vendor-neutral stations, enabling easy import and export of SCL files. 4. Advanced Analysis Tools